Vibrator.



PATENTED MAY 26, 190s.

M. K. GOLDEN.

VIBRATOR.

APPLICATION FILED MBA, 1907.

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when D'IA'IES PATENT orrron.

MAX K. GOLDEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO HORTO ELECTRICAL COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

VIBRATOR.

To all whom it may concern:

Be it known that I, MAX K. GOLDEN, a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Vibrators, of which the following is a full, clear, and exact description.

The invention relates to devices commonly known as vibrators and more particularly to the operating mechanism therefor.

In electro-magnetically operated vibrators it has heretofore been proposed to actuate a striker or vibratory element in one direction by an electro-magnet and in the opposite direction by a coil-spring or springs. These devices are operated at a high speed and subjected to severe vibration, and it has been found in practice that coil-springs become crystallized after'a short period of use, resulting fromdisintegration of the metal produced by the constant vibration to which .the springs and vibrator-parts are subjected.

One object of the invention is to provide an improved vibrator embodying mechanism in which the employment of coil-springs for operating the striker or armature-operated element in one direction is avoided, thus providing a device which does not become defective after a short period of use.

The invention further designs to provide a vibrator of improved construction.

The invention consists of the several novel features hereinafter set forth and more particularly defined by claim at the conclusion hereof.

In the drawings: Figure 1 is a plan view of a vibrator embodying the invention, a section of the inclosing case being removed. Fig. 2 is a section on line 22 of Fig. 1. Fig. 3 is a section on line 33 of Fig. 1.

The invention is shown as applied to a portable vibrator comprising an inclosing case formed of sections 10 and 11 secured together by screws 12 and secured to a hanble 13. The case serves as a frame for the several parts of the operating mechanism. A11 electro-magnet 14 comprising a pair of helices 15, is secured by screws to a suitable lug 17 integrally formed with section 10 of the case. The electro-magnet may be of any suitable construction as well understood in the art. An armature 19 is suspended in position to be attracted by the electromagnet when the helices thereof are energized. Armature 19 has integrally formed Specification of Letters Patent.

Application filed March 4, 1907.

Patented May 26, 1908.

Serial No. 360,308.

therewith an extension or arm 20 to the outer end of which is secured by a screw 21, a striker or hammer 22 adapted to operate against an abutment 23 during that stroke in which the armature is attracted by the magnet and against an abutment 24 on the retractile stroke. Abutments 23 and 24are usually formed of slightly elastic rubber to prevent undue noise while the hammer is being operated.

The armature is supported by a resilient strip 19 integrally formed therewith but of reduced thickness to render it resilient or yielding so it will permit the armature to respond to the eleotro-magnet. The resilient armature-support is secured to the frame by screws 25 which extend through a thickened terminal 19 thereof and into a lug 26 integrally formed with frame-section 10. This resilient strip is mounted to normally suspend the armature away from the cores 15 of the helices and in position to be attracted .when the cores are magnetized by suitable current in the helices. The resilient stri) and armature are usually made of tem )erec steel and in practice it has been founc that this resilient armature-su porting strip provides effective means or retracting the armature which is not affected by the vibration to which the frame is subjected during the operation of the striker and particularly when the device is operated at high speed. It serves furthermore, as effective supporting-means for the armature and hammer in whichpivots therefor which rapidly become worn or loose are dispensed with. Such construction results in a simple, durable and noiseless construction.

A cord 27 usually leads into the case through the handle and in which cord the conductors for supplying potential to the magnet, are included. One conductor 28 is connected to a contact-screw 29 which is mounted in a sleeve 30 of insulating material and the inner terminal of which is provided with a contact-point through which current can pass to a resilient switch 31 secured to armature-supporting strip 19 and insulated by washers 32 from the latter. From switch-member 31 a conductor 33 leads to one of the helices 15 of the electro-magnet. The helices are connected together and the other heliX is connected to a conductor 33. A conductor 28 is connected to switch 31.

.Conductors 28 and 28 are connected to a condenser to prevent sparking of the contact points between switch 31 and screw 29 when the circuit is broken thereat and in usual manner well understood in the art. Switch member 31 is arranged to close the circuit at its contact with screw 29 when the armature is retracted and when the latter has been attracted by the electro-magnet the circuit will be interrupted at the contacts between screw 29 and switch-member 31. Thus it will be seen that this switch or makeandbreak device for the electric circuit is armature-operated and alternately and automatically opened and closed by the eleetro-magnet. An insulating bushing 30 for contactscrew 29 is secured in a lug 33 integrally formed with frame-section 10.

Abutment 23 for hammer 22 is secured to a bracket 34 which is secured by screws 35 to framesection 10. An elastic applicator or massaging tool 36, of usual construction, is detachably mounted in a post 37 secured to a slightly yielding arm 38 on bracket 34. An applicator 39 is rigidly mounted on the outer end of a post 40 which is screw-threaded to a socket 41 riveted to frame-section 10. It will be understood that the particular form of the applicators or tools forms no part of the present invention, and that any tool may be actuated by the improved mechan- 1SII1.

Abutment 24, which is positioned to limit the retractile stroke of the hammer, is adjustable, being mounted on the inner end of a split screw 42 which passes through a correspondingly threaded sleeve or bushing 43 which is secured in the casing, the screw being split will be frictionally held in set posi tion to hold the abutment where desired. By adjustment of screw 42, abutment 24 can be set to vary the stroke of the armature and hammer and to correspondingly vary the strength or amplitude of the vibrations produced by the hammer. This screw may be adjusted to force the armature inwardly to hold switch-member S1 normally out of engagement with screw 29 to render the device inoperative. This abutment 24 may be adjusted to regulate the operation of the vibrator and serves also as a step-device. An advantage of this construction is that when screw 42 is adjusted to hold the armature in position to separate the switch-members it will be firmly held in set position so there is no likelihood of the vibrator being accidentally rendered operative.

The operation will be as follows: Then it is desired to use the vibrator, screw 42 which normally holds armature 19 in close proximity to the electro-magnet will be turned to permit resilient strip 19 to shift switchmember 31 sustained thereby, into contact with screw 29, when current will pass through the helices of the electro-magnet and energize them so cores 15 will be magnetized and attract armature 19 to shift the striker 22 against abutment 23. At the end of the retractile stroke of the armature the switch will be open, the helices 15 of the electromagnet will be deenergized sulliciently to permit resilient strip 19 to retract the armature and hammer against abutment 24 and will again operate switch-member 31 to close the electric circuit at screw 29. Such operation will continue and the tool or tools will be vibrated by impact of the hammer against the abutments. The strength of the vibration can be regulated and varied to a nicety by adjustment of screw 42 and when it is desired to discontinue the operation it is only necessary to adjust screw 42 to hold the armature against movement and so switchmember 31 will be held away from screw 29.

The invention provides an electro-mag netically operating mechanism for a vibrator which is simple in construction, durable and can be produced at a low cost.

The invention is not to be understood as restricted to the details of construction shown and described but may be modified without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a vibrator, the combination of a frame or support, an electro-magnet, means for energizing the electro-magnet, an armature for said magnet, an applicator, an armature-operated vibratory striker, an abutment vibrated by said striker to actuate said applicator, and a resilient strip for supporting said armature.

2. In a vibrator, the combination of a frame or support an electro-magnet, means for energizing the magnet, an armature for said magnet, an armature-operated striker, an abutment vibrated. by said striker, and an armature having integrally formed therewith a resilient strip for retracting the armature.

3. In a vibrator, the combination of a frame, or support an electro-magnet, means for energizing the magnet, an armature for said magnet, an armature-operated striker, an abutment vibrated by said striker, an armature having integrally formed therewith a resilient strip for retracting and supporting the armature.

4. In a vibrator, the combination of a frame, an electro-magnet, means for energizing the magnet, an armature for said magnet, an armature-operated striker, an applicator actuated by the striker, a yielding armaturesupport and an armature-operated switch for controlling the operation of the electro-magnet.

5. In a vibrator, the combination of a frame, an electromagnet, means for energizing the magnet, an armature for said magnet,

an armature-operated striker, an applicator actuated by the striker, a resilient armaturesupporting strip, and an armature-operated switch for controlling the operation of the electro-magnet.

6. In a vibrator, the combination of a frame, an electro-magnet, means for energizing the magnet, an armature for the magnet, an armature-operated striker, an applicator actuated by the striker, said armature having integrally formed therewith a resilient strip, and an armature-operated switch for controlling the operation of the electro magnet.

7. In a vibrator, the combination of a frame, an electro-magnet, means for energizing the magnet, an armature for the magnet, an armature-operated striker, a pair of abutments for the striker, an applicator operated by one of the abutments, and means for adjusting the other abutment to hold the armature inoperative.

8. In a vibrator, the combination of a frame, an electro-magnet, means for energizing the magnet, an armature for the magnet,

an armature-operated striker, a pair of abutments for the striker, an applicator operated by one of the abutments, an armature-operated switch for controlling the operation of the electro-magnet, and means for adjusting one of the abutments to hold the armature inoperative and the switch in open position.

9. In a vibrator, the combination of a frame, an electro-magnet, means for energizing the magnet, an armature for the magnet, an armature-operated striker, a pair of abutments for the striker, an applicator operated by one of the abutments, a resilient armature-support, an armature-operated switch for controlling the operation of the electromagnet, and means for adjusting one of said abutments to vary the operation of the armature.

10. In a vibrator, the combination of a frame, an electro-magnet, means for energizing the magnet, an armature for the magnet, an armature-operated striker, a pair of abutments for the striker, an applicator operated by one of the abutments, an armature-operated switch for controlling the operation of the electro-magnet, and means for adjusting one of said abutments to vary the operation of the striker and for holding the armature in position to hold the switch-open.

MAX K. GOLDEN. \Vitnesses FRED GERLAOH, LEONE S. RUSSELL. 

